pretty easy actually - I do have plans - I use luan and 1x3" strapping - can get a set of eight sled (16 silos) per sheet of 4 x 8' luan and less than a bundle of strapping so cost is less than $25 (although I have not bought lumber in a few months so not sure of current costs)

I have them on my home system - will check to see if I can send them to you - the home system does not have WORD and the instructions I put together are in WORD - what is your e-mail?????

got it JD....will try to send my prepared instruction sheets....but if I can't, I'll post them for you and others. Big issue for you to determine is the actual silo .... I can give you the dimensions so you can draw up your own, or if you need to have a template, I will be glad to send a couple to you that you can trace onto the luan.......just PM me with your address